LIGHTING DEVICE

• US 20130010470A1
• Filed: 07/03/2012
• Published: 01/10/2013
• Est. Priority Date: 07/06/2011
• Status: Active Grant

• Current Assignee: Suzhou Lekin Semiconductor Company Limited
• Original Assignee: LG Innotek Company Limited (LG Corporation)
• Inventors: KONG, Kyung Il, MIN, Byeong Guk
• Granted Patent: US 9,234,645 B2
• Time in Patent Office: Days
• US Class Current: 362/238
• CPC Class Codes: F21K 9/233 specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
• CPC Class Codes: F21V 13/08 the elements being filters or photoluminescent elements and reflectors
• CPC Class Codes: F21V 14/04 by movement of reflectors in vehicle head lamps F21S41/675
• CPC Class Codes: F21V 14/06 by movement of refractors in vehicle head lamps F21S41/635
• CPC Class Codes: F21V 23/008 the casing being outside the housing of the lighting device
• CPC Class Codes: F21V 23/04 the elements being switches safety devices F21V25/00
• CPC Class Codes: F21V 29/763 the planes containing the fins or blades having the direction of the light emitting axis
• CPC Class Codes: F21V 29/89 Metals
• CPC Class Codes: F21V 7/00 Reflectors for light sources characterised by cooling arrangements F21V29/505
• CPC Class Codes: F21V 7/0025 Combination of two or more reflectors for a single light source array of reflectors for a cluster of light sources F21V7/0083
• CPC Class Codes: F21V 7/043 with cylindrical surface
• CPC Class Codes: F21V 7/16 with provision for adjusting the curvature
• CPC Class Codes: F21V 7/18 with provision for folding or collapsing
• CPC Class Codes: F21V 7/24 characterised by the material
• CPC Class Codes: F21V 7/28 characterised by coatings
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

Disclosed is a lighting device including: a body; a light emitting module which is disposed on the body; an optical member which is disposed on the light emitting module and is installed to be movable up and down; and a reflector which is disposed between the body and the optical member and reflects light emitted from the light emitting module, wherein a shape of the reflector is changed according to the moving of the optical member, and wherein a light distribution angle and a light distribution range of light passing through the optical member are variable depending on the change of the shape of the reflector.

Claims

1. A lighting device comprising:

a body;

a light emitting module which is disposed on the body;

an optical member which is disposed on the light emitting module and is installed to be movable up and down; and

a reflector which is disposed between the body and the optical member and reflects light emitted from the light emitting module,

wherein a shape of the reflector is changed according to the moving of the optical member,

and wherein a light distribution angle and a light distribution range of light passing through the optical member are variable depending on the change of the shape of the reflector.

2. The lighting device of claim 1, wherein the reflector comprises at least two reflection plates, and wherein the reflection plates are unfolded when the optical member becomes farther from the light emitting module, and reflection plates are folded when the optical member becomes closer to the light emitting module.

3. The lighting device of claim 2, wherein the light emitting module comprises a hinge coupled to one end of the reflection plate, and wherein the reflection plate is coupled movably on the axis of the one end.

4. The lighting device of claim 3, wherein a width of each of the reflection plates becomes greater toward the other end from the one end thereof.

5. The lighting device of claim 1, further comprising a cover which is disposed on an outer portion of the optical member and is coupled to the body, wherein the cover is movable up and down.

6. The lighting device of claim 5, wherein the cover is rotatably coupled to the body and moves up and down according to the rotary motion.

7. The lighting device of claim 5, wherein when the cover moves up, the other end of the reflector becomes closer to the body, and wherein when the cover moves down, the other end of the reflector becomes farther from the body.

8. A lighting device comprising:

a body which has one side;

a light emitting module which is disposed on the one side of the body;

a cap which is disposed on the light emitting module and through which light emitted from the light emitting module passes;

a reflector which is disposed between the one side of the body and the cap and surrounds the light emitting module;

a cover which includes an opening in which the cap is disposed and is coupled to the body in such a manner as to be movable up and down on the one side of the body,

wherein an inclination of the reflector based on the one side of the body is changed by the moving of the cover.

9. The lighting device of claim 8, wherein the cover wherein the cover is rotatably coupled to the body and moves up and down according to the rotary motion.

10. The lighting device of claim 8, wherein one end of the reflector is coupled to the light emitting module, and wherein the other end of the reflector contacts with the cap.

11. The lighting device of claim 10, wherein when the cover moves up, the other end of the reflector becomes closer to the one side of the body, and wherein when the cover moves down, the other end of the reflector becomes farther from the one side of the body.

12. The lighting device of claim 10, wherein the light emitting module further comprises a hinge coupled to the one end of the reflector.

13. A lighting device comprising:

a driving unit;

a body which is disposed under the driving unit and includes one side including a first area and a second area surrounding the first area;

a first light emitting module which receives electric power from the driving unit and is disposed in the first area of the body;

a second light emitting module which receives electric power from the driving unit and is disposed in the second area of the body;

a first reflector which is disposed on the one side of the body and surrounds the first light emitting module; and

a second reflector which is disposed on the one side of the body and surrounds the second light emitting module;

wherein the driving unit controls the first light emitting module and the second light emitting module independently of each other.

14. The lighting device of claim 13, wherein an inclination of the first reflector based on the one side of the body is different from an inclination of the second reflector based on the one side of the body.

15. The lighting device of claim 13, wherein at least one of the first reflector and the second reflector comprises at least two reflection plates, and wherein the reflection plates are unfolded when an optical member becomes farther from the light emitting module, and reflection plates are folded when the optical member becomes closer to the light emitting module.

16. The lighting device of claim 13, wherein the first light emitting module is disposed in the central portion of the one side of the body, and wherein the second light emitting module is disposed on the outer circumference of the one side of the body.

17. The lighting device of claim 13, further comprising:

a cover which is disposed on the first and the second light emitting modules and the first and the second reflectors, and is connected to the body and has an opening; and

a lens which is disposed in the opening of the cover.

18. The lighting device of claim 17, wherein the cover is coupled to the body in such a manner as to be movable up and down with respect to the body, and wherein the driving of the first and the second light emitting modules is controlled by the moving of the cover.

19. The lighting device of claim 18, wherein the cover is rotatably coupled to the body and moves up and down according to the rotary motion.

20. The lighting device of claim 17, wherein the body comprises a switch determining the driving of at least one of the first and the second light emitting modules, and wherein the switch is disposed on a coupling portion between the cover and the body, and is operated by contact with the cover.